we now know the identity of the fbi agent who first saw the e- mail exchanges between petraeus' mistress paula broadwell and tampa socialite jill kelley. his name is frederick humphries. he alerted his superiors about the e-mails which then led to the investigation that uncovered the affair. >>> let's take it outside now, plenty of clouds today, kept the temperatures pretty cool. here's live look outside tonight from northwest d.c. will the sunshine break through tomorrow? let's check in with sue palka and find out. >> i think we will have a nice sunny end to our workweek, but we have clouds hanging around tonight and down toward the northern neck and lower southern maryland we're actually seeing maybe some indication of light rain with sleet. you can see it here, a lot of clouds still hanging around the area. this is coming from a weak disturbance well down to the south. i don't think this precipitation will get much further north, but keeping an eye on places like montrose and just to the west of st. george island. perhaps that orange and yellow is a little sleet mixing with very light